You will need to scan or take a photo of your forms before you are able to upload them to your clearance.
Option 1: You can take a photo with your smart phone.
Option 2: You can use a third party scanning app. There are may free, third party apps, like Genius Scan (Apple)(Android), that will allow you to take pictures of your forms and merge them within the app.
Option 3: You can use a scanner to upload your documents to your computer before attaching them to your clearance.